Determining the Fluoride Content of A Toothpaste Sample With A Fluoride Ion Selective Electrode

A fluoride ion selective electrode is calibrated using the Multipoint Calibration Chart extension, to determine over what range of fluoride concentration the electrode has a Nernstian response. The calibrated electrode is then used to determine the fluoride content of a toothpaste sample, which can then be compared to the level quoted by the manufacturer.